Quantum shock waves in the Heisenberg XY model
نویسنده
چکیده
We show the existence of quantum states of the Heisenberg XY chain which closely follow the motion of the corresponding semi-classical ones, and whose evolution resemble the propagation of a shock wave in a fluid. These states are exact solutions of the Schrödinger equation of the XY model and their classical counterpart are simply domain walls or soliton-like solutions. PACS numbers: 75.10.j, 62.50, 03.65. ∗also at the Institute for Low Temperature Physics, Kharkov, Ukraine. E-mail: [email protected] †also at the Istituto Nazionale di Fisica della Materia (INFM) Unità di Salerno. E-mail: [email protected] 1
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